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To: Juergen Gross , linux-kernel Cc: "xen-devel@lists.xenproject.org" , Linus Torvalds References: <6bcd447e-fd49-0519-a59e-478f84e9120f@suse.com> From: Sander Eikelenboom Message-ID: <46c90fab-5928-d181-432f-228304a7e019@eikelenboom.it> Date: Thu, 17 Jun 2021 14:35:50 +0200 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:78.0) Gecko/20100101 Thunderbird/78.11.0 MIME-Version: 1.0 In-Reply-To: <6bcd447e-fd49-0519-a59e-478f84e9120f@suse.com> Content-Type: text/plain; charset=utf-8; format=flowed Content-Language: en-US Content-Transfer-Encoding: 7bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 17/06/2021 12:30, Juergen Gross wrote: > On 17.06.21 11:26, Sander Eikelenboom wrote: >> L.S., >> >> I just tried to upgrade and test the linux kernel going from the 5.12 >> kernel series to 5.13-rc6 on my homeserver with Xen, but ran in some >> trouble. >> >> Some VM's boot fine (with more than 256MB memory assigned), but the >> smaller (memory wise) PVH ones crash during kernel boot due to OOM. >> Booting VM's with 5.12(.9) kernel still works fine, also when dom0 is >> running 5.13-rc6 (but it has more memory assigned, so that is not >> unexpected). >> >> The 5.13-rc6'ish kernel is a pull of today, tried both with and without > >> last AKPM's patches, but that >> makes no difference. >> >> Below are stacktraces from a few of the crashing VM's. >> >> Attached is the kernel .config >> >> Any pointers ? > > Did you compare memory usage with a bootable guest between kernel 5.12 > and 5.13-rc6? > > Any chance you could bisect? > > > Juergen > Yeah a bisection is already underway, still 10 steps to go ... -- Sander